Accessing Amazon services - Amazon Cognito
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Accessing Amazon services

After you configure your Amazon Cognito credentials provider and retrieve Amazon credentials, you can create an Amazon Web Service client.

Amazon SDK resources for creating a client

The following snippet initializes an Amazon DynamoDB client:

To use a Amazon Cognito identity pool in an Android app, set up Amazon Amplify. For more information, see Authentication in the Amplify Dev Center.

// Create a service client with the provider
AmazonDynamoDB client = new AmazonDynamoDBClient(credentialsProvider);

The credentials provider communicates with Amazon Cognito, retrieving both the unique identifier for authenticated and unauthenticated users as well as temporary, limited privilege Amazon credentials for the Amazon Mobile SDK. The retrieved credentials are valid for one hour, and the provider refreshes them when they expire.

To use a Amazon Cognito identity pool in an iOS app, set up Amazon Amplify. For more information, see Swift Authentication and Flutter Authentication in the Amplify Dev Center.

// create a configuration that uses the provider
AWSServiceConfiguration *configuration = [AWSServiceConfiguration configurationWithRegion:AWSRegionUSEast1 provider:credentialsProvider];
// get a client with the default service configuration
AWSDynamoDB *dynamoDB = [AWSDynamoDB defaultDynamoDB];

The credentials provider communicates with Amazon Cognito, retrieving both the unique identifier for authenticated and unauthenticated users as well as temporary, limited privilege Amazon credentials for the Amazon Mobile SDK. The retrieved credentials are valid for one hour, and the provider refreshes them when they expire.

To use a Amazon Cognito identity pool in an iOS app, set up Amazon Amplify. For more information, see Swift Authentication in the Amplify Dev Center.

// get a client with the default service configuration
let dynamoDB = AWSDynamoDB.default()

// get a client with a custom configuration
AWSDynamoDB.register(with: configuration!, forKey: "USWest2DynamoDB");
let dynamoDBCustom = AWSDynamoDB(forKey: "USWest2DynamoDB")

The credentials provider communicates with Amazon Cognito, retrieving both the unique identifier for authenticated and unauthenticated users as well as temporary, limited privilege Amazon credentials for the Amazon Mobile SDK. The retrieved credentials are valid for one hour, and the provider refreshes them when they expire. 

// Create a service client with the provider
var dynamodb = new AWS.DynamoDB({region: 'us-west-2'});

The credentials provider communicates with Amazon Cognito, retrieving both the unique identifier for authenticated and unauthenticated users as well as temporary, limited-privilege Amazon credentials for the Amazon Mobile SDK. The retrieved credentials are valid for one hour, and the provider refreshes them when they expire.

The Amazon SDK for Unity is now part of the Amazon SDK for .NET. To get started with Amazon Cognito in the Amazon SDK for .NET, see Amazon Cognito credentials provider in the Amazon SDK for .NET Developer Guide. Or see Amplify Dev Center for options for building an app with Amazon Amplify.

// create a service client that uses credentials provided by Cognito
AmazonDynamoDBClient client = new AmazonDynamoDBClient(credentials, REGION);

The credentials provider communicates with Amazon Cognito, retrieving both the unique identifier for authenticated and unauthenticated users as well as temporary, limited-privilege Amazon credentials for the Amazon Mobile SDK. The retrieved credentials are valid for one hour, and the provider refreshes them when they expire.

The Amazon SDK for Xamarin is now part of the Amazon SDK for .NET. To get started with Amazon Cognito in the Amazon SDK for .NET, see Amazon Cognito credentials provider in the Amazon SDK for .NET Developer Guide. Or see Amplify Dev Center for options for building an app with Amazon Amplify.

// create a service client that uses credentials provided by Cognito
var client = new AmazonDynamoDBClient(credentials, REGION)

The credentials provider communicates with Amazon Cognito, retrieving both the unique identifier for authenticated and unauthenticated users as well as temporary, limited-privilege Amazon credentials for the Amazon Mobile SDK. The retrieved credentials are valid for one hour, and the provider refreshes them when they expire.